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Virus:Worm/Palevo.bivw
Date discovered:30/11/2010
Type:Worm
In the wild:No
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:61.440 Bytes
MD5 checksum:616550adafac8441733917a6e75844e6
VDF version:7.10.06.170
IVDF version:7.10.14.141 - Tuesday, November 30, 2010

 General Aliases:
   •  Kaspersky: Packed.Win32.Krap.ig
   •  Bitdefender: Worm.Generic.321675
   •  Eset: Win32/TrojanClicker.VB.NJT
     GData: Worm.Generic.321675
     DrWeb: Trojan.MulDrop2.12720


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following location:
   • %SYSDIR%\umdmgr.exe



It deletes the initially executed copy of itself.



It deletes the following file:
   • %malware execution directory%\26034438_war.bat



The following file is created:

%malware execution directory%\26034438_war.bat Furthermore it gets executed after it was fully created. This batch file is used to delete a file.



It tries to execute the following files:

Filename:
   • cmd /c ""%malware execution directory%\%executed file%.bat" 0"


Filename:
   • %SYSDIR%\umdmgr.exe /B

 Registry The following registry key is added in order to run the process after reboot:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "26034438_war"="%SYSDIR%\umdmgr.exe"

 Miscellaneous Accesses internet resources:
   • http://umx1.worldadult.biz/**********

 File details Programming language:
The malware program was written in Visual Basic.


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Petre Galan on Tuesday, May 17, 2011
Description updated by Petre Galan on Wednesday, May 18, 2011

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